Scouring-tool for boots and shoes.



W. C. STEWART.

SCOURING TOOL FOR BOOTS AND SHOES.

APPLICATION FILED AUG-7. 1914 1, 176,001., Patented Mar. 21, 1916.

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WILLIAM C. STEWART, OF SWAMPSCOTT, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

SCOURING-TOOL FQR BOOTS AND SHOEE.

Specification of Letters Patent.

Patented Mar. 21, 1916..

Application filed August 7, 1914- Serial No. 855,673.

To all whom it may concern Be it known that I, VVILLIAM C. STEWART, a subject of the King of England, residing at Swampscott, in the county of Essex and State of Massachusetts, have invented certain Improvements in scouring-Tools for Boots and Shoes, of which the following de scription, in connection with the accompanying drawings, is a specification, like reference characterson the drawings indicating like parts in the several figures.

This invention relates to scouring tools and is herein illustrated in connection with a tool for securing the bottoms of boots and shoes.

It is customary to scour the bottom of the sole of a boot or shoe and particularly the shank portion of the sole by means of a tool comprising a cushioning member or pad of circular outline over the supporting face of which is stretched an abrasive cover. This cover is commonly a disk of-sandpaper or emery paper having a hole in its center to receive the shank of a screw which passes also through a hole in the center of the pad and is threaded into the end of a rotary spindle, the head of the screw serving to hold the cover and pad in place.

The general object of the present invention is to improve the construction of scouring tools of this general type and particularly to produce an improved tool of small diameter which shall nevertheless have a substantially fiat operative surface.

Referring now to the accompanying drawings,Figure 1 is an elevation of a portion of the head of a bufling machine fitted with a tool in which, the present invention is embodied, a shoe being shown in position to have the hank of the sole scoured. Fig. 2 shows in elevation the lower end of the rotary spindle and the clamping screw, and in section the tool. Fig. 3 is an illustration of the tool illustrated in Fig. 2 viewed from beneath. Fig. 4 .is a view similar to that of Fig. 3 but showing the abrasive cover in one stage of its manufacture. Fig. 5 is a perspective of the finished cover.

In Fig. 1 is shown a portion of the head of a bufling machine in which the frame is indicated at 1, a rotary spindle at 3, a pulley fast to said spindle at 5 and a belt for driving said pulley at 7. No further description of the bufiing machine proper will be given since it is old and well known and its details of construction form no part of the present invention. In this figure a shoe having a high arch is shown, and it should be particularly noted that owing to 'the curve of the shank the diameter of the scouring tool must necessarily be comparatively small in order to permit the shank of the shoe to be scoured close up to the breast of the heel, since otherwise the curved portion of the shank is liable to be injured scour the shank of the sole in the vicinity of its junction with the heel. In either case the cutting surface of the tool should be flat in order to operate properly. To this end the abrasive cover 8 (see Figs. 4 and 5) is first slit as at 9 to form triangular tongues 11, the tongues are then bent upwardly and their tips 13 bent inwardly as shown in Fig. 5, this bending of the tongues being accomplished in any convenient manner as for example by suitable molds. In order to hold the tongues in position in spaced relation and to give permanency to the shape imparted to the cover by the bending or molding operation, a washer 15 of heavy paper or other suitable material is glued or otherwise fastened to the tips 13, said washer lying in a plane which isapproximately parallel to that of the flat annular margin of the cover.

Referring now to Figs. 2 and 3, the spindle 3 has formed on its end a collar 17 which receives the central upper surface of a cushioning member or pad 19 of felt or other resilient material, said pad being molded to proper shape so that it presents an annular supporting face to receive the flat margin of the cover 8. A binding screw 21 has its shank threaded into a socket in the spindle 3, the effect of tightening the -screw being to force the pad '19 firmly against the supporting collar 17 and at the same time to force the washer 15 firmly against the pad, thereby securely holding the parts of the tool together and fastening the tool to the spindle.

It should be noted that the head of the fastening screw lies well above the plane of the operative surface of the tool and that owing to the sharp angles formed at the junction of the tongues with the margin of the cover a tool of small diameter may be produced, the operative margin of which is nevertheless flat.

Having thus described my invention, I claim as new and desire to secure by Letters Patent of the United States:

1. An abrasive tool adapted to be fastened to the end of a rotary spindle comprising a cover of abrasive material having a flat annular margin, a plurality of upwardly extending tongues the tips of which lie in a plane approximately parallel to that of the margin, means for holding said tips in spaced relation, a resilient pad of a shape to receive said cover, and means for attaching said pad and cover to said spindle.

2. An abrasive tool adapted to be fastened to the end of a rotary spindle comprising a cover of abrasive material having a flat annular margin, a pluiality of upwardly extending tongues the tips of which lie in a plane approximately parallel to that of the margin, a washer fastened to said tips, a resilient pad of a shape to receive said cover, and means for attaching said pad and cover to said spindle.

3. A cover for an abrasive tool comprising a piece of sheet material having a flat annular margin, an upwardly extending central portion formed by spaced tongues the tips of which are bent inwardly, and means for holding said tips in spaced relation.

4. A cover for an abrasive tool comprising a piece of sheet material having a flat annular margin, an upwardly extending central portion formed by spaced tongues the tips of which are bent inwardly, and a washer fastened to said tips.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WILLIAM G. STEWART.

Witnesses:

ERIC A. HOLMGREN, FRANK D. DE TOUR. 

